I used to draw grease pencil on surface normally on older blender versions but now I cant find the option to do that,how can I draw on surface on the new blender grease pencil?
Add a new Grease Pencil datablock in a properies window (N). In Tool Shelf (T) change the stroke placement to Surface. Hold D and then press and hold the LMB button to draw. Disable the X Ray option if you don't want to see the strokes through the object. To erase, hold D button and then press and hold the RMB.